Fuel pressure regulator. Has a setup in there with 2 o-rings and a spacer between them. Napa CRB212305?

 

Swayed, in a pinch, you can replace one or both of the o-rings on the end of the metal tube that goes into your fuel pressure regulator(if thats where it's leaking). You will have to remove the clamp that steadies the fuel line and squease the plastics tabs together to release the line from the regulator. Before you do that, don't forget to blead off your fuel pressure with the shrader valve on the fuel rail (looks like a tire valve and don't get gas in your eyes, that sucks).

 

Fuel disconnects

Quick disconnect part numbers

So far the Napa part numbers for just orings is:

Napa 730-5018 3/8 Viton individual orings $1.56 each
Napa 730-5017 5/16 Viton individual orings $1.35 each
Napa CRB 212305 fuel line repair kit 5/16? $15.93 each


Mopar repair kits:

83502745 fuel line repair kit 5/16 $6.99 Morris
83504447 fuel line/Trans line repair kit 3/8 $8.99 Morris

 

Thanks guys I put the O rings in and it has stopped leaking. Now let's hope this helps because it's just one thing after the other for this XJ. I'm contemplating calling it the Terminator rather than the Battle Wagon because it's just killing all my money slowly!!!